clc;
clear;
%电机参数
Rs = 0.02;
Ls = 74e-6;
%电流环控制频率10k
Ts = 100e-6;
%电流环相关的总延时
Td = 1.5*Ts;

%传递函数
s = tf('s');

%delay
G_delay = exp(-s*Td);

step(G_delay, 0.001);